<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref, watch } from 'vue'
import { userRegisterService, userLoginService } from '@/api/user.js'
import { useUserStore } from '@/stores'
import { useRouter } from 'vue-router'

const isRegister = ref(false)
const userStore = useUserStore()
const router = useRouter()

const formModel = ref({
  username: '',
  password: '',
  repassword: ''
})

const rules = {
  username: [
    { required: true, message: '请输入用户名', trigger: 'blur' },
    { min: 1, max: 10, message: '用户名为5-10的字符', trigger: 'blur' }
  ],
  password: [
    { required: true, message: '请输入密码', trigger: 'blur' },
    {
      pattern: /^\S{6,15}$/,
      message: '密码问6-15的非空字符',
      trigger: 'blur'
    }
  ],
  repassword: [
    { required: true, message: '请再次输入密码', trigger: 'blur' },
    {
      pattern: /^\S{6,15}$/,
      message: '密码问6-15的非空字符',
      trigger: 'blur'
    },
    {
      validator: (rule, value, callback) => {
        if (value != formModel.value.password) {
          callback(new Error('两次的密码输入不一致'))
        } else {
          callback()
        }
      },
      trigger: 'blur'
    }
  ]
}

const form = ref(null)

const register = async () => {
  await form.value.validate()
  await userRegisterService(formModel.value)
  ElMessage.success('注册成功')
  isRegister.value = false
}

watch(isRegister, () => {
  formModel.value = {
    username: '',
    password: '',
    repassword: ''
  }
})

const login = async () => {
  await form.value.validate()
  const res = await userLoginService(formModel.value)

  ElMessage.success('登录成功')
  userStore.setToken(res.data.token)
  router.push('/')
  // console.log(res)
}
</script>

<template>
  <!-- 	1.el-row表示一行，一行分成24份
		  el-col表示列
			(1) :span="12"代表在一行中，占12份（50%)
			(2) :span="6"表示在一行中，占6份(25%)
			(3) :offset=""3”代表在一行中，左侧margin份数
		
		el-form 整个表单组件
		el-form-item表单的一行(一个表单域)
		el-input表单元素（输入框)
		
    	2．校验相关
			(1) el-form => : model="ruleForm"	绑定的整个form的数据对象	{ xxx,XXX,XXX }
			(2) el-form => :rules="rules"		绑定的整个rules规则对象	 { xx×,XXX,XXX }
    		rules中的数据分别对应rulesform中的校验规则，后面rules会基于rulesform的元素来实现的
			(3) 表单元素=>v-model="ruleForm.xxx”  给表单元素，绑定form的子属性
			(4) prop配置生效的是哪个校验规则(和rules中的字段要对应)

 	-->
  <el-row class="login-page">
    <el-col :span="12" class="bg"></el-col>
    <el-col :span="6" :offset="3" class="form">
      <!-- 注册页面 -->
      <el-form
        :model="formModel"
        :rules="rules"
        ref="form"
        size="large"
        autocomplete="off"
        v-if="isRegister"
      >
        <el-form-item>
          <h1>注册</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            v-model="formModel.username"
            :prefix-icon="User"
            placeholder="请输入用户名"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="formModel.password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
        <el-form-item prop="repassword">
          <el-input
            v-model="formModel.repassword"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入再次密码"
          ></el-input>
        </el-form-item>
        <el-form-item>
          <el-button
            @click="register"
            class="button"
            type="primary"
            auto-insert-space
          >
            注册
          </el-button>
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = false">
            ← 返回
          </el-link>
        </el-form-item>
      </el-form>

      <!-- 登录页面 -->
      <el-form
        :model="formModel"
        :rules="rules"
        ref="form"
        size="large"
        autocomplete="off"
        v-else
      >
        <el-form-item>
          <h1>登录</h1>
        </el-form-item>
        <el-form-item prop="username">
          <el-input
            :prefix-icon="User"
            v-model="formModel.username"
            placeholder="请输入用户名"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            name="password"
            v-model="formModel.password"
            :prefix-icon="Lock"
            type="password"
            placeholder="请输入密码"
          ></el-input>
        </el-form-item>
        <el-form-item class="flex">
          <div class="flex">
            <el-checkbox>记住我</el-checkbox>
            <el-link type="primary" :underline="false">忘记密码？</el-link>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button
            @click="login"
            class="button"
            type="primary"
            auto-insert-space
            >登录</el-button
          >
        </el-form-item>
        <el-form-item class="flex">
          <el-link type="info" :underline="false" @click="isRegister = true">
            注册 →
          </el-link>
        </el-form-item>
      </el-form>
    </el-col>
  </el-row>
</template>

<style lang="scss" scoped>
.login-page {
  height: 100vh;
  background-color: #fff;

  .bg {
    background:
      url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
      url('@/assets/login_bg.jpg') no-repeat center / cover;
    border-radius: 0 20px 20px 0;
  }

  .form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    user-select: none;

    .title {
      margin: 0 auto;
    }

    .button {
      width: 100%;
    }

    .flex {
      width: 100%;
      display: flex;
      justify-content: space-between;
    }
  }
}
</style>
